Note: This Question Requires Access to Solver $P = 3 x + 15 y$

Multiple Choice

Note: This question requires access to Solver.
In the following linear programming problem, how much would the firm be willing to pay for an additional 5 units of Resource B?
Maximize $P = 3 x + 15 y$
subject to $\quad 2 x + 4 y \leq 12$ (Resource A)
$5 x + 2 y \leq 10$ (Resource B)
and $\quad x \geq 0 , y \geq 0$ .

A) Nothing
B) 11.25
C) 15
D) 18.75
E) It is impossible to determine.